Home / 812,109.51-1,120,721.00-449,566.88

Finding the Fourth Proportional to 812,109.51, 1,120,721.00 and 449,566.88

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Solution

The fourth proportional to 812,109.51, 1,120,721.00 and 449,566.88 is: 620,407.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,109.51 : 1,120,721.00 = 449,566.88 : x
  2. Step 2: Convert to fraction form
    812,109.51/1,120,721.00 = 449,566.88/x
  3. Step 3: Cross multiply
    812,109.51x = 1,120,721.00 × 449,566.88
  4. Step 4: Simplify right side
    812,109.51x = 503,839,035,469.04
  5. Step 5: Solve for x
    x = 503,839,035,469.04/812,109.51
  6. Step 6: Final answer
    x = 620,407.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.